<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8" />
  <meta http-equiv="X-UA-Compatible" content="IE=edge" />
  <meta name="viewport" content="width=device-width, initial-scale=1.0" />
  <link rel="stylesheet" href="./css/inputnumber.css" />
  <link rel="stylesheet" href="./css/index.css" />
  <title>购物车</title>
</head>

<body>
  <div class="app-container" id="app">
    <!-- 顶部banner -->
    <div class="banner-box"><img src="http://autumnfish.cn/static/fruit.jpg" alt="" /></div>
    <!-- 面包屑 -->
    <div class="breadcrumb">
      <span>🏠</span>
      /
      <span>购物车</span>
    </div>
    <!-- 购物车主体 -->
    <div class="main">
      <div class="table">
        <!-- 头部 -->
        <div class="thead">
          <div class="tr">
            <div class="th">选中</div>
            <div class="th th-pic">图片</div>
            <div class="th">单价</div>
            <div class="th num-th">个数</div>
            <div class="th">小计</div>
            <div class="th">操作</div>
          </div>
        </div>
        <!-- 身体 -->
        <div class="tbody">

          <!-- 渲染需要的行 -->
          <!-- 
            <div class="tr">
            <div class="td"><input type="checkbox" checked /></div>
            <div class="td"><img src="http://autumnfish.cn/static/火龙果.png" alt="" /></div>
            <div class="td">6</div>
            <div class="td">
              <div class="my-input-number">
                <button class="decrease"> - </button>
                <span class="my-input__inner">2</span>
                <button class="increase"> + </button>
              </div>
            </div>
            <div class="td">12</div>
            <div class="td"><button class="del">删除</button></div>
          </div> 
        -->

        </div>
      </div>
      <!-- 底部 -->
      <div class="bottom">
        <!-- 全选 -->
        <label class="check-all">
          <input type="checkbox" />
          全选
        </label>
        <div class="right-box">
          <!-- 所有商品总价 -->
          <span class="price-box">总价&nbsp;&nbsp;:&nbsp;&nbsp;¥&nbsp;<span class="price">24</span></span>
          <!-- 结算按钮 -->
          <button class="pay">结算( 6 )</button>
        </div>
      </div>
    </div>
    <!-- 空车 -->
    <div class="empty">🛒空空如也</div>
  </div>
  <script>
    const dataArr = [{
        id: 1,
        icon: 'http://autumnfish.cn/static/火龙果.png',
        isChecked: true,
        num: 2,
        price: 6,
      },
      {
        id: 2,
        icon: 'http://autumnfish.cn/static/荔枝.png',
        isChecked: false,
        num: 7,
        price: 20,
      },
      {
        id: 3,
        icon: 'http://autumnfish.cn/static/榴莲.png',
        isChecked: false,
        num: 3,
        price: 40,
      },
      {
        id: 4,
        icon: 'http://autumnfish.cn/static/鸭梨.png',
        isChecked: true,
        num: 10,
        price: 3,
      },
      {
        id: 5,
        icon: 'http://autumnfish.cn/static/樱桃.png',
        isChecked: false,
        num: 20,
        price: 34,
      },
    ]

    let tbody = document.querySelector('.tbody')

    function render() {
      const str = localStorage.getItem('fruits')
      const arr = JSON.parse(str)
      const res = arr.map(function (item, index) {
        console.log(item.icon)
        return `<div class="tr">
            <div class="td"><input type="checkbox" ${item.isChecked ? 'checked' : ''} /></div>
            <div class="td"><img src="${item.icon}" alt="" /></div>
            <div class="td">${item.price}</div>
            <div class="td">
              <div class="my-input-number">
                <button class="decrease"> - </button>
                <span class="my-input__inner">${item.num}</span>
                <button class="increase"> + </button>
              </div>
            </div>
            <div class="td">${item.price * item.num}</div>
            <div class="td"><button data-index="${index}" class="del">删除</button></div>
          </div>`
      })

      console.log(res)
      tbody.innerHTML = res.join('')
    }
    render()
    // 1. 给父元素添加事件委托的处理
    tbody.addEventListener('click', function (e) {
      // 2. 判断用户是否已经点击了 删除 按钮
      if (e.target.className === 'del') {
        // 3. 获取 点击的那个删除按钮对应的水果的 索引
        const index = e.target.dataset.index
        // 4. 按照索引删除数据( 获取本地存储的数据，在按照索引删除数据 )
        const arr = JSON.parse(localStorage.getItem('fruits'))
        arr.splice(index, 1)
        // 5. 删除完毕之后，将数据保存回本地存储
        let str = JSON.stringify(arr)
        localStorage.setItem('fruits', str)
        // 6. 删除完毕之后，要重新渲染页面
        render()
      }
    })
  </script>
</body>

</html>